I also play RS and could advice you to find server without skillcap - it would be very close to RS experience. There you could level all your skills at one character and play with quite interesting balance. At UOForever your skills limited to 700 summ per character; it makes unique 7x balance, but make you less feel your character, less RP-feeling cause you have to create separate crafter char, separate mage & etc..

Personally I play @ cataclysmuo.com server; not too big population there atm, but pretty interesting concept, pvp and pve.. And much more closer to RS gameplay.